Inspired by the blog post of Prusa Research about a DIY Faceshield design they did in the czech republic thousands of people designed and printed faceshields this weekend. We wanted to produce and test exisiting designs and validate these designs.

For Whom are we making

PPE for hospitals
other doctors and shopworkers

Things we made

Faceshields

Prusa Design (Mang)

* [source](https://www.prusaprinters.org/prints/25857-prusa-protective-face-shield-rc2)
* RC1
    * ~2 hours printing time
    * Does not fit properly over glasses
    * Works well, looks nice
    * Tried with a thin (0,1mm?) sheet
        * Sheet crumples (with thin sheet)
    * Tried with 0,8mm PET from OBI
        * Feels very sturdy
        * Elastic band is available at some grocery stores (Wenco Breitelastic, 2 Meter, waschbar, 2€, 70% Polyester, 30% Elastodien)
        * Laser cuts OK
            * Lots of off gassing
            * Cut outline with scissors (because of small laser cutting area and fumes) and laser cut holes
        * Can use a drill to make the holes
            * 8mm drill bit
            * Some gap because the pins are oval, not round
            * Must be very precise! Printed template at 100% (2 pages taped edge to edge, tiled in Illustrator). Used center punch to mark hole locations
        * Since the 0,8mm PET comes on a roll it already has a curved shape - I did not find the bottom printed piece to be necessary
    * Takes a lot of space in backpack - put into a tote bag?
    * 4 pieces fit on Prusa i3 build plate
    * Prints very easily if you have Prusa i3, PETG and Prusa textured build sheet
* RC2
    * ~2.5 hours (only printing top piece)
    * Only 2 fit on Prusa i3 build plate
* Materials
    * A4 laser copy sheet? https://www.amazon.de/OfficeTree%C2%AE-Blatt-hochwertige-Overhead-Folie-Projektions-Qualit%C3%A4t/dp/B0773LXTFJ/

Lasercut only Design (Andreas)

* [source](https://hackaday.io/project/170481/gallery?fbclid=IwAR3AdC4cgBnsciCFXmdvg9nBn-yto_iS2KGRlL1Yr0coXB-Hqha9BcxsEp4#fddb29aa5822b1c2c7a33137b6a5d89c)
* PET 0.5 bought from a role in a department store
* 9.99 € for 1,25x1m
* difficult to cut as it wobbles
* needs to get pinned to the laser bed
* needs to be redesigned so no square cuts because there it would crack
* cut time 2 min
* assemples in 2 min
* can be mass produced
* maybe add EVA Foam on top

DIY Shield without Machines

* [source](https://www.ease-designers.com/easymask-diy-design?fbclid=IwAR0MCO33HMyLjamlvx1NXI-4OaAuXRR_QK32BBscQ-WDlItkKW08zD6dteY)    
* A4 0.3 PVC
* we have not tested this design

Masks

we also wanted to make masks as a faceshield should not be used alone but we did not have time to look at facemask designs
Fortunately Alex a member of erfindergarden made a facemask with his mom
github

Tools we used

Lasercutter, 3D Printer, Sissors, Drill

Messages / Sharing our experience

You probably don't have everything that is in any given design - be creative with what you have!
Don't just make one for yourself, make more and give them away (safely)!
- If you buy materials, make sure to use it all for shields to share!
Think about sanitary conditions before giving items to other people
If companies make 5000, Makerspaces make 500, and you make 10 we'll help make a difference

Whats Next?

test test test
test with beard, glasses, man and woman, long hear
get a validation from a German hospital
think about one professional design that will be produced in Fablabs and Makerspaces and one DIY Design that can be produced at home
we are already help of makers in Belgians who got a request to make 7500 shields validate there design *be ready with Materials, a validated design and a production plan when the requests come in Germany
Michael Ang
- contactmang@gmail.com
- website: https://michaelang.com
- facebook: Mangtronix
Andreas Kopp
- andreas@erfindergarden.de
- whatsapp: 01512412246
- Website: http://www.erfindergarden.de
- facebook: @andreaskopp @erfindergarden